PART EIGHT: THE DATA OF MACROECONOMICS. Measuring A Nation s Income

Transcription

1 ECON 102 Chapter 22 1 PART EIGHT: THE DATA OF MACROECONOMICS Measuring A Nation s Income Chapter 23

2 What did we learn until now? In the first semester we covered microeconomics Microeconomics is the study of how individual households and firms make decisions and how they interact with one another in markets We began by analysing how the forces of supply and demand determine the price for each good and service produced in the economy We spent much time over production, costs and the behaviour of firms in different types of markets such as perfect competition, monopoly, oligopoly and oligopolistic competition 2

3 What will we learn next? The second semester covers macroeconomics Macroeconomics studies the economy as a whole Its goal is to explain the economic changes that affect many households, firms and markets at the same time With critical variables such as employment, unemployment, economic growth, inflation, the exchange rate, the interest rate, taxes, the budget, etc. Macroeconomic issues are often the subject of heated debates by the public They are very relevant in answering many questions about what is happening to the Turkish economy or the world economy 3

4 Macroeconomics Macroeconomics answers questions like: Why is the income of citizens is higher in some countries and lower in others? Why do prices rise more rapidly in some periods and countries than others? Why do production and employment expand in some years and contract in others? Why does the exchange rate change and how does it affect the economy? Why does the interest rate change and how does it affect the economy? What are the effects of a budget deficit or surplus on the economy? 4

5 Plan of the second semester In Part VIII we study the data of macroeconomics: national income accounting and the price indexes used to measure inflation In Part IX we look at the real economy in the long run: growth, investment and unemployment Part X introduces money and the causes and effects of inflation in a closed economy in the long run Part XI opens the economy to the outside world, through trade and capital movements, still in the long run Part XII analyses short-run fluctuations in output, inflation, interest rate, etc. and the effects of monetary and fiscal policy 5

6 Plan of Part Eight The aim of Part VIII is to introduce basic data of macroeconomics Ch.23 deals with National Income Accounting, in other words about measuring accurately the total production of goods and services in the economy Gross Domestic Product, Gross National Product, GDP deflator will be defined Ch. 24 deals with measuring inflation What is a price index? How the Consumer Price Index and the Wholesale Price Index are calculated? Other macroeconomic data such as the Balance of Payments, Central Bank Balance Sheet, etc. will be defined later at relevant chapters 6

7 The economy s income and expenditure In order to establish whether the economy is doing well or poorly, it is natural to look at the total income that everyone in the economy is earning during one period of time For an economy as a whole, income must equal expenditure because: Every transaction involves one buyer and one seller Every TL of spending by some buyer is a TL of income for some seller Everyone s income is someone s expenditure; everyone s spending is someone s income 7

8 8 The simple circular flow diagram We can look back to the simple circular flow diagram first introduced in Chapter 2 We assumed there was no government, no financial markets and no economic transactions with the outside world In other words, a simple closed economy Households and firms interacted in two markets Markets for goods and services Markets for factors of production There were two types of flows Real flows: of goods, services and factor inputs Nominal flows: of spending and income

9 9 The simple circular flow diagram Market for Goods and Services Revenue Goods and services sold Goods and services bought Spending Firms Households Wage, rent, and profit Inputs for production Labor, land and capital Income Market for Factors of Production

10 10 Gross domestic product GDP Gross Domestic Product (GDP) is a measure of the total incomes and expenditures of an economy In other words, it is the total market value of all final goods and services produced within a country in a given time period Same economic phenomenon has three aspects: Production and sale of goods and services Spending on these goods and services Factor incomes from these goods and services We can now redraw the circular flow diagram Important assumption: to keep it simple, we assume that there is no government, no financial sector, no economic transactions with the outside world

11 The Circular-Flow Diagram 11 Revenue (= GDP) Goods and services sold MARKETS FOR GOODS AND SERVICES Spending (= GDP) Goods and services bought FIRMS HOUSEHOLDS Inputs for production Wages, rent, and profit (= GDP) Flow of dollars MARKETS FOR FACTORS OF PRODUCTION Labor, land, and capital Income (= GDP) Flow of goods and services

12 National income accounting Gross Domestic Product (GDP) : Gayrisafi Yurtiçi Hasıla (GSYİH) Türkiye İstatistik Kurumu (TÜİK) is responsible for National Income Accounting in Turkey It is calculated on an annual and quarterly (three monthly) basis GDP includes all items produced in the economy and sold legally in the markets GDP excludes most items that are produced and consumed at home without ever entering the marketplace (such as subsistance agriculture) It excludes items produced and sold illicitly, such as illegal drugs 12

13 Important features of GDP While computing the GDP, production is valued at market prices GDP records only the value of final goods but not the intermediate goods to prevent double counting GDP includes both tangible goods such as food, clothing, cars, etc. intangible services such as haircuts, housecleaning, doctor visits, education, etc. It covers goods and services currently produced, but excludes transactions involving goods produced in the past (buying a second hand car or house( It measures the value of production within a country during a specified time period 13

14 On Value Added A major danger for GDP calculations is the double counting of the inputs used for the production of final goods and services Exemple: in bread, you have wheat, flour, transport, energy, baking, etc, If you add all of them in GDP and then bread, they will be counted more than once Value Added corresponds to sales minus inputs bought from other firms Value added is by definition equal to factor incomes: wages, profit, rent and interest Value added tax (Katma Değer Vergisi - KDV) in Turkey works on the same principle 14

15 Gross National Product GNP GDP measures the income produced within a country for a given period of time Part of the product may belong to non-residents: such as interest and divident payments abroad Yet, some residents may also earn income abroad: such as interest and dividends received Gross National Product (GNP) or Gayrisafi Milli Hasıla (GSMH) is the total market value of all final goods and services produced within a given period of time by a nation s permanent residents, regardless of where they are It is calculated by adding net factor income from abroad to GDP 15

16 Other measures of income Net National Product NNP (Net Milli Hasıla) is obtained by substracting from GNP the wear and tear (depreciation) of the nation s stock of capital National Income (Milli Gelir) is obtained by substacting from NNP indirect taxes paid by firms to government (sales tax, VAT, etc) and substracting subsidies received Personal Income is the income that households and non-corporate businesses in the economy receive: it excludes non-distributed profits of corporations Disposable Personal Income is obtained by substracting from Personal Income taxes paid to and transfers received from the government 16

17 National Income Identity In macroeconomics, GDP or income is usually represented with the letter Y Expenditures in an economy are divided into four main categories Consumption (C), Investment (I), Government purchases (G) and Net exports (NX) Y = C + I + G + NX This is a very important identity that we shall be using again and again in macroeconomics It says: income is equal to spending on private consumption plus spending on investment plus government purchases plus the difference between exports and imports 17

18 Components of GDP Consumption (C): all spending by households on goods and services with the exception of purchases of new houses Investment (I): all spending on capital equipment, on inventories and on buildings and other structures (including new housing) by businesses and government Government purchases (G) includes all spending on goods and services by local and central public administration except for transfer payments (they are not made in exchange for goods and services) Net exports (NX) is equal to exports of goods and services minus imports of goods and services 18

19 19 Methods of national accounting PRODUCTION EXPENDITURE INCOME Farming CONSUMPTION (Private) WAGES Forestry Food and Beverages Private sector Fishing Durable Goods Public sector Agriculture Total Semi-Durable Goods SALARIES Mining and Quarrying Energy, Transpor, Communication Private sector Manufacturing Services Public sector Electricity, Gas, Water Ownership of Dwellings INCOME OF SELF EMPLOYED Industrial Total GOVERNMENT COMSUMPTION RENT Construction Industry Salary, Wage PROFITS Wholesale, Retail Other Current Non-corporate profits Services of Hotel and Restaurant GROSS FİXED CAPITAL FORMATION Corporate profits Commerce Total Public sector INTEREST INCOME Transportation and Communications Machinery Financial Institutions Construction (building) Ownership of Dwellings Construction (Other) Professions and Services Private sector Relative Banking Services Machinery SECTORS TOTAL Construction (all) Government Services CHANGES IN STOCKS Non-profit private services Exports ( Goods and Services) TOTAL Imports (Goods and Services) Import taxes NET EXPORTS GROSS DOMESTIC PRODUCT (GDP)GROSS DOM. PRODUCT (GDP) Factor income from abroad Statistical Errors Factor income to abroad GDP (After St.Err.) NET FACTOR INCOME GROSS NATIONAL PRODUCT (GNP)

20 Turkey: GNP by sectors (1) 20 ( Quadrillion TL) 2001 % Share in GNP Farming 22,2 12,4 Forestry 0,5 0,3 Fishing 0,7 0,4 Agriculture Total 23,4 13,1 Mining and Quarrying 2,1 1,2 Manufacturing 36,7 20,5 Electricity, Gas, Water 7,0 3,9 Industrial Total 45,9 25,6 Construction Industry 9,2 5,1 Wholesale, Retail 30,1 16,8 Services of Hotel and Restaurant 7,7 4,3 Commerce Total 37,9 21,1 Transportation and Communications 28,5 15,9 Financial Institutions 6,6 3,7 Ownership of Dwellings 8,5 4,7 Professions and Services 6,7 3,7 Relative Banking Services 11,5 6,4 SECTORS TOTAL 18,8 10,5

21 Turkey: GNP by sectors (2) 21 ( Quadrillion TL) 2001 % Share in GNP Agriculture Total 23,4 13,1 Industrial Total 45,9 25,6 Other sectors Total 85,8 47,8 SECTORS TOTAL 155,1 86,4 Government Services 18,8 10,5 Non-profit private services 0,9 0,5 TOTAL 174,8 97,4 Import Tax 6,6 3,7 GROSS DOMESTIC PRODUCT (GDP) 181,4 101,1 Factor income from abroad 7,5 4,2 Factor income to abroad 9,4 5,2 NET FACTOR INCOME FROM ABROAD -1,9-1,1 GROSS NATIONAL PRODUCT (GNP) 179,5 100,0

22 22 Turkey: GDP by expenditure (1) ( Quadrillion TL) 2001 % Share in GDP CONSUMPTION (Private) 131,2 72,3 Food and Beverages 48,0 26,5 Durable Goods 13,7 7,5 Semi-Durable Goods 18,3 10,1 Energy, Transportation, Communication 27,3 15,0 Services 14,8 8,1 Ownership of Dwellings 9,2 5,1 GOVERNMENT CONSUMPTION 25,7 14,1 Salary, Wage 18,8 10,4 Other Current 6,9 3,8 GROSS FİXED CAPITAL FORMATION 32,3 17,8 PUBLIC SECTOR 10,0 5,5 Machinery 2,4 1,3 Construction (Building) 2,8 1,5 Construction (Other) 4,8 2,6 PRIVATE SECTOR 22,3 12,3 Machinery (Private Sector) 10,2 5,6 Construction (all) 12,2 6,7 DOMESTIC DEMAND (exc.change in stocks) -2,4-1,3 Source : CB

23 23 Turkey: GDP by expenditure (2) ( Quadrillion TL) 2001 % Share in GDP PRIVATE CONSUMPTION 131,2 72,3 GOVERNMENT CONSUMPTION 25,7 14,1 GROSS FIXED CAPITAL FORMATION 32,3 17,8 DOMESTIC DEMAND (exc. change in stocks) 189,2 104,3 CHANGES IN STOCKS -2,4-1,3 Exports ( Goods and Services) 60,2 33,2 Imports (Goods and Services) -55,9-30,8 NET EXPORTS 4,3 2,4 GROSS DOMESTIC PRODUCT (GDP) 191,1 105,3 Statistical Errors -9,7-5,3 GROSS DOMESTIC PRODUCT (After St.Errors) 181,4 100,0 Source : CB

24 Real versus nominal GDP By definition, national income accounting is undertaken at actual (current) prices Nominal GDP values the production of goods and services at current prices But the price level changes from year to year, depending on inflation of the period In order to have a meaningful comparaison of the income levels of two periods, we must adjust nominal GDP for inflation Real GDP values the production of goods and services at historical (constant) prices GDP deflator is a measure of inflation which allows the transformation of nominal GNP into real GDP 24

25 GDP deflator The GDP deflator measures the current level of prices relative to the level of prices in a base year The GDP deflator shows the rise in the price level from the perspective of GDP since the base year Therefore we can distinguish the rise in nominal GDP attributable to a rise in prices and that due to a rise in quantities produced Real GDP = 19xx GDP deflator = (Nominal GDP 19xx ) (GDP deflator ) X xx Nominal GDP Real GDP

26 Turkey: nominal and real GNP 26 Nominal GDP % GNP Real GDP % (Trillion TL) Change Index Deflator (Trillion TL) Change Index , ,7 76 2, , ,5 76 0, , ,6 84 9, , ,2 84 0, , ,5 89 6, , ,4 97 8, , ,3 91-5, , ,2 98 7, , , , , , , , , , , , , , , , , , ,4 147

27 Turkey: GDP and GNP in US$ 27 Nominal GDP NFI GNP Average GNP % (Trillion TL) $/TL (Billion $) Change Index , , , , , , , , , , , , , , , , , , ,9 170

28 28 Turkey: GNP from 1987 to trilyon TL

29 Turkey: GNP growth rate % GNP Growth Rate (%) Average Growth Rate (%)

30 International comparaisons Comparing the income for the same country led us to the GDP deflator Comparing GDP per person for different countries also poses measurement problems One way is to convert nominal GDP to US$ at the actual exchange rate of the local currency But the relative cost of different goods and services making up GDP varies enormously among countries A better method uses the price of a basket of goods and services in different countries It is called Purchasing Power Parity PPP Poor countries have higher GDP per capita in PPP compared with actual exchange rates 30

31 World: GNP per capita 31 per capita PPP, Gross National GNI-PPP Gross National (1) / (2) dollars, 2001 Income PPP (1) as % of US Income (2) % US Japan Germany Greece Argentina Mexico Russia Brazil Turkey China Egypt India Pakistan Bangladesh Nigeria Source: World Bank

32 GDP and economic well-being GDP is the best single measure of the economic well-being of a society GDP per person is obtained by dividing GDP by the population of that year GDP per person summarises the income and expenditure of the average person in the economy However, GDP is not a perfect measure of the happiness or quality of life Many important activities take place outside markets in a modern economy Typically, the value of leisure, the value of a clean environment, the quality of the public services, etc. are not included in GDP 32

33 33 World: measuring quality of life PPP, GNl Life Expectancy Under-5 Mortality Adult illiteracy rate, % of Per capita dollars,2001 at birth, 1999 rate, per 1000,1999 people 15 and above, 1999 Japan Greece US Germany Argentina Mexico China Turkey Egypt Brazil Russia Pakistan India Bangladesh Nigeria Soruce: World Bank

34 Conclusion Macroeconomics study the economy as a whole Because every transaction in the market has a buyer and a seller, the total expenditure in the economy must equal the total income in the economy GDP is the market value of all final goods and services produced within a country in a given period of time GDP is divided among four major components of expenditure: consumption, investment, government purchases and net exports Nominal GDP uses current (actual) prices to value the production of the economy. Real GDP uses historical (base year) constant prices 34

35 Conclusion National income identity is very important: Y = C + I + G + NX GNP is obtained by adding net factor income from abroad to GDP International comparaisons of GDP per capita at the current exchange rate fail to give meaningful results Purchasing Power Parity is a better measure of the standard of living among countries GDP is a good measure of economic well-being because people prefer higher to lower income But GDP is not a perfect measure of the quality of life because some things, such as leisure and clean environment is not measured by GDP 35